AD7998: 内置I2C兼容接口的8通道、12位ADC，采用20引脚TSSOP封装
AD7998是一款8通道、12位、高速、低功耗、逐次逼近型ADC，采用2.7 V至5.5 V单电源供电，转换时间为2微秒（µs）。该器件内置8通道多路复用器和采样保持放大器。AD7998提供与I2C接口兼容的双线式串行接口。该器件有两个版本：AD7998-0和AD7998-1，每个版本允许最少使用两个不同的I2C地址。AD7998-0上的I2C接口支持标准和快速I2C两种接口模式。AD7998-1上的I2C接口支持标准、快速及两种高速I2C接口模式。
The AD7998 is an 8 channel, 12-bit, high speed, low power, successive-approximation ADC. The part operates from a single 2.7 V to 5.5 V power supply and features a conversion time of 2 µs. The part contains an eight channel multiplexer and track/hold amplifier.
The AD7998 provides a two-wire serial interface, which is compatible with I²C interfaces. Each part comes in two versions, AD7998-0 and AD7998-1. Each version allows for a minimum of two different I²C addresses. The I²C interface on the AD7998-0 supports Standard and Fast I²C Interface Modes. The I²C Interface on the AD7998-1 supports Standard, Fast and two High-Speed I²C Interface Modes.
AD7998 特性
- 12位ADC，具有快速转换时间：2 µs
- 8个单端模拟输入通道
- 额定电压（VDD）：2.7 V至5.5 V
- 低功耗
- 高吞吐量：188 kSPS
- 序列器操作
- 自动循环模式
- I2C®兼容型串行接口
- I2C®接口支持：标准、快速及高速模式
- 超量程指示
- 可通过AS引脚选择寻址
- 自动关断模式：最大1 µA
- 12-Bit ADC with Fast Conversion Time: 2 µs
- Eight Single-Ended Analog Input Channels
- Specified for VDD of 2.7 V to 5.5 V
- Low Power Consumption
- Fast Throughput Rate: - 188 kSPS
- Sequencer Operation
- Automatic Cycle Mode
- I²C® Compatible Serial Interface
- I²C® Interface supports:Standard, Fast, and High-Speed Modes
- Out of Range Indicator
- Pin-Selectable Addressing via AS
- Automatic Shutdown Mode: - 1 µA max
AD7998 技术指标
- Resolution (Bits): 12bit
- # Chan: 8
- Sample Rate: 79kSPS
- Interface: I²C/Ser 2-Wire,Ser
- Analog Input Type: SE-Uni
- Ain Range: Uni (Vref)
- ADC Architecture: SAR
- Pkg Type: SOP
AD7998 功能框图
- Recommended Input Buffer Amplifiers for the AD7998
- For low distortion, low noise, dual supplies, we recommend the AD8599.
- For precision, low noise, single supply, we recommend the AD8605 family of operational amplifiers.
- For single supply, high speed, low power, we suggest the AD8031 or the dual AD8032.
- For precision, high speed, low cost, we recommend the quad AD8604.
- Recommended External References - 2.5V for the AD7997
- For applications requiring best accuracy, low noise, low drift, we recommend the ADR421 or AD780.
- For low noise, high output current applications, we recommend the ADR431.
- For wide supply applications, we recommend the ADR03 or AD780.
- For cost sensitive applications, we suggest the AD1582, ADR381 or ADR391.
- For the reference buffer amplifier, we recommend the AD8605.
- For applications requiring 2.048V to 4.096V, we recommend the REF191 reference family.
- Recommended Digital Isolators for the AD7997
- Recommended Power Solutions
- For selecting voltage regulator products, use ADIsimPower.
- For selecting supervisor products, use the Supervisor Parametric Search.
AD7998 功能框图
AD7998 芯片订购指南
| 产品型号 | 封装 | 引脚 | 温度范围 | 包装和数量 | 报价*(100-499) | 报价*1000 pcs | RoHS |
|---|---|---|---|---|---|---|---|
| AD7998BRU-0 产品状态: 量产 | 20 ld TSSOP | 20 | 工业 | Tube, 75 | $ 4.81 | $ 4.10 | 否 |
| AD7998BRU-0REEL 产品状态: 量产 | 20 ld TSSOP | 20 | 工业 | Reel, 2500 | - | $ 4.10 | 否 |
| AD7998BRU-1 产品状态: 量产 | 20 ld TSSOP | 20 | 工业 | Tube, 75 | $ 5.16 | $ 4.39 | 否 |
| AD7998BRU-1REEL 产品状态: 停产 | 20 ld TSSOP | 20 | 工业 | Reel, 2500 | - | - | 否 |
| AD7998BRUZ-0 产品状态: 量产 | 20 ld TSSOP | 20 | 工业 | Tube, 75 | $ 4.17 | $ 3.54 | 是 |
| AD7998BRUZ-0REEL 产品状态: 量产 | 20 ld TSSOP | 20 | 工业 | Reel, 2500 | - | $ 3.54 | 是 |
| AD7998BRUZ-1 产品状态: 量产 | 20 ld TSSOP | 20 | 工业 | Tube, 75 | $ 4.46 | $ 3.80 | 是 |
| AD7998BRUZ-1REEL 产品状态: 量产 | 20 ld TSSOP | 20 | 工业 | Reel, 2500 | - | $ 3.80 | 是 |
| EVAL-AD7998EBZ 产品状态: 量产 | 评估板 | - | 1 | $ 150.00 | $ 150.00 | 是 |
AD7998 应用技术支持与电子电路设计开发资源下载
- AD7998 数据手册DataSheet下载 .pdf
- Analog Devices, Inc.ADI 美国模拟器件公司产品订购手册 .pdf
- ADC模数转换器选型指南 . pdf
